Post-breeding migrations of newts (Triturus cristatus and T. marmoratus) with contrasting ecological requirements

By R. Jehle, J. Arntzen. 2000

133 citations recorded by the source corpus.

Two newt species with contrasting ecological requirements (Triturus cristatus and T. marmoratus) were radio-tracked after leaving a shared breeding pond in western France. Movements of 30 individuals were recorded over 491 days. During the first terrestrial night, the newts migrated with high directionality up to 137 m to their refuges. Burrows of small mammals were among the favourite refuges. Movements after the first night were mostly underground and over shorter distances (< 6.8 m). Sixty-four per cent of all tracked newts stayed within 20 m of the pond edge, and migrations were recorded up to 146 m away from the pond. Both species preferred areas with bushes, hedgerows and trees, and avoided pastures and open areas. Migration in the direction of a habitat type characterized by trees and underground shelters was favoured over migrations in other directions. A clear terrestrial niche separation between the two newt species was not observed. The results are discussed in relation to previous findings that T. cristatus supersedes T. marmoratus as a consequence of anthropogenic change to the terrestrial environment, affecting the species differentially.

Subfields: Ecological Modeling, Ecology, Nature and Landscape Conservation

View Paper: https://www.semanticscholar.org/paper/297c9dbe2487ef2b5d56d4ec08509ca73f0baa62

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Citations in the corpus

Breeding phenology and larval distribution of amphibians in a Mediterranean pond network with unpredictable hydrology (2003, methodology): “Several studies on habitat selection and movement patterns from aquatic to terrestrial habitats by European amphibians have been published recently, mainly using radio-tracking technique (Sinsch, 1988; Joly & Miaud, 1993; Jehle & Arntzen, 2000; Miaud et al., 2000; Joly et al., 2001; Malmgren, 2002).”
Dynamics of a declining amphibian metapopulation: Survival, dispersal and the impact of climate (2010, background): “As the next nearest newt pond was beyond the normal dispersal distance of great crested newts (i.e. >1 km from any of the studied ponds – see Oldham and Swan, 1997; Kupfer and Kneitz, 2000; Jehle and Arntzen, 2000), the four pond systems were considered to be isolated from other potential newt breed”
Movement ecology of amphibians: A missing component for understanding population declines (2014, background): “The extent to which juveniles respond to habitat features during movement away from their natal site likely increases the longer an animal has been moving, as has been shown explicitly in juvenile owls and newts (Delgado et al., 2009; Jehle and Arntzen, 2000).”
Impacts of habitat loss and restoration on amphibian populations (2009, background): “2002, Semlitsch 2008) and the preferences of breeding adults to return to natal ponds (Jehle and Arntzen 2000) – the clustered configuration increases colonisation probabilities of the ponds and secures the ecological connectedness of the metapopulations (Semlitsch 2002, Petranka et al.”
Effect of salmonid introduction and other environmental characteristics on amphibian distribution and abundance in mountain lakes of northern Spain (2006, background): “…of fish predators may be increased by the fact that distances among mountain lakes are frequently outside amphibian dispersal capacities (e.g. Jehle & Arntzen, 2000; Holenweg, 2001; Schabetsberger et al., 2004), which can prevent recolonization displacements (see e.g. Bradford, Tabatabai &…”